Flexible governor control for internal-combustion engine throttle valves



May 26, 1953 M. F. PEITZ 2,639,700

FLEXIBLE GOVERNOR CONTROL FOR INTERNAL-COMBUSTION ENGINE THROTTLE VALVES.

Filed Aug. 25, 1950 2 Sheets-Sheet 1 Fig.

Fig.2 34

% Inventor Mart/q F. Pair:

May 26, 1953 M. F. PEITZ 2,639,700

FLEXIBLE GOVERNOR CONTROL FOR INTERNAL-COMBUSTION ENGINE THROTTLE VALVES 2 Sheets-Sheet 2 Filed Aug. 25, 1950 Fig. 6

Inventor Martin F. Peirz 406% Wave EM Patented May 26, 1953 r Fries FLEXIBLE GOVERNOR CONTROL FOR-INF TERNAL-COMBUS'IION ENGINE THROT- TLE VALVES Martin F. Peitz, Garden City, Kane Application August 25, 1950, Serial N 0. 181,442

This invention comprises novel and useful improvements in a flexible governor control for internal combustion engine throttle valves and more specifically pertains to a connecting linkage operatively associating the control arm of a speed governor with the actuating shaft of a fuel control valve for internal combustion engines in a manner which will permit effective control of the throttle valve by the speed governor, while permitting the customary manual control of the throttle valve to override the action of the governor.

The primary object of this invention is to provide an improved flexible connecting linkage for a throttle valve and governor of an internal combustion engine which shall operatively connect these parts together in an improved manner, and wherein the operation of the throttle valvewill be positively controlled by the governor and yet may be readily overridden by the conventional manual operating means for the throttle valve.

A further object of the invention is to provide an improved flexible control linkage as set forth in the preceding paragraph in which the positive connection of the governor control arm to the throttle valve may be easily and accurately adjusted'.

A further object of the invention is to provide a flexible control linkage as set forth in the foregoing objects in which a single flexible cable is Still another object of the invention is to pro- 5 vide an improved means for adjustably connecting the control arm of a governor with the throttle valve of an internal combustion engine and wherein the adjustment of the throttle valve with respect to the governor may be quickly and readily varied.

These, together with various ancillary features .and objects of the invention,-which will later become apparent as the following descriptionproceeds, are attained by the present invention,v a preferred embodiment of which has been illustrated, by way of example, in the accompanying drawings, wherein:

Figure 1 is a diagrammatic, side elevational view showing the flexible ioontrol linkage forming the subject of this invention applied to the engine throttle valve and the control arm ofan engine speed governor in accordance'with this invention;

Figure 2, is a fragmentary -.elevat1ona1 view 5 Claims. (01. 123-108.)

$2 showing the manner in which the flexible control linkage -is adjustabl'y connected to the control arm of the speed governor; Figure 3 is a detail view similar to but taken at right angles to Figure 2 and showing further details of the connection between the control linkage and the control arm of the governor;

Figure 4 is a vertical transverse sectional view taken substantially upon the plane indicated by the section line 4-4 of Figure 1 and illustrating the manner in which the actuating wheel forming a part of the flexible control linkage is applied to the actuating shaft of the throttle valve;

Figure 5 is a fragmentary vertical sectional View showing the manner in which the cable of the flexible control linkage is associated with the actuating wheel of the throttle valve;

Figure '6 is a horizontal sectional view through an anchor member forming a part of the flexible 2 operating linkage; and,

- panying drawings, wherein like numerals desig riate similar parts throughout the various views, it will be seen by reference to Figure 1 a portion of an internal combustion engine of any conventional design indicated generally by the numeral it! which has associated therewith a conventional form of speed governor indicated generally by the numeral I2 and having a governor control arm 14, there being further illustrated a portion of a fuel intake manifold 16 by means of which a combustible mixture of fuel is supplied from a conventional carbureter it from any suitable fuel source to the interior of the internal combustion engine. As further shown in Figure 1, the novel flexible control linkage forming the subject of this invention is operatively connected between the carburetor and the governor control arm for operating and controlling the action of the former by the latter as set forth hereinafter.

Referring now more particularly to Figure 4 it will be apparent that the carbureter I8 is connected to the manifold 16 by means of a riser or conduit section '20 in which is journaled the customary valve actuating shaft 22 upon which is secured the conventional butterfly fuel control valve 24. As so far described, the engine is of any of anumber of known and conventional de signs, :the principle of this invention being in nowise limited to any particular type of engine, speed governor, carburetor or the like.- As-is well known, the speed governor I2 is manually set or adjusted to regulate the throttle valve 24 of the engine in such manner as to maintain a substantially constant engine speed despite variations and the load imposed on the engine. However, in the use of speed governors it is desirable to provide some means whereby the operator of the engine may override the action of the governor as for instance in emergencies, and thus open the throttle valve further than that setting of the same which would normally be affected by the governor.

The present invention contemplates a novel flexible connecting linkage which may be interposed between any conventional form of speed governor and its control arm 14 and the throttle valve 24 of an internal combustion engine to effect the above mentioned desired results.

As shown more clearly in Figures 2 and 3, the governor control arm [4 at its outer extremity has pivotally secured thereto a rod-like or boltlike body 26 having a transverse bore 28 therethrough this bore being intersected by a fastening or clamping bolt 30.

The flexible connecting linkage includes a flexible member 32, preferably in the form of a flexible cable or the like, having secured at one end a terminal in the form of a rod 34 which is adapted to be adjustably received in the bore 28 and clamped in adjusted position therein as by the clamping bolt 30. Conveniently, the terminal member 34 may be secured to the cable 32 as engaged at 36 and 38 respectively. At its other end, the flexible cable 32 is provided with a similar loop or eye 40 for a purpose which will be later set forth.

The shaft 22 of the butterfly valve 24 extends beyond the side of the riser 20 and has secured thereto in any desired manner, an actuating member in the form of a wheel or the like 42 provided with a circumferential groove 44 upon its periphery, the cable 32 being entrained about this groove as shown in Figures 1 and 5. The conventional butterfly valve control arm 46 is secured to the end of the actuating shaft 22 and receives the customary manual control link of the throttle valve, not shown, but being of any conventional design.

That portion of the cable 32 which is entrained about the actuating wheel 42 in the groove 44 thereof, is fixedly secured thereto in circumferentially adjusted position through the agency of a lug 48 carried by the wheel and which overhangs the groove, and a clamping screw 50 screw threadedly engaged through this lug for clamping the cable against the bottom of the groove as shown in Figure 5.

As so far described, it will be apparent that the effective length of the flexible cable 34 may be readily adjusted with respect to the distance between the control arm l4 of the governor and the actuating wheel 42 of the throttle valve either by properly adjusting the length of the cable and its position with respect to the actuating Wheel through the clamping screw 50 or by adjusting the terminal portion 34 in the bore 28 by the clamping screw 30. When so adjusted, it will be apparent that there is provided a positive connection whereby movement of the governor control arm [4 towards the right of Figure 1 will move the cable 32 in a counter-clockwise direction with respect to the actuating wheel 42 as viewed in Figures 1 and 5, thereby rotating the throttle valve to its open position.

Resilient means are provided for opposing this opening movement of the throttle valve.; This resilient means comprises a tension spring 52 having one end secured in the above mentioned loop 40 at the end of the flexible cable, and having its other end, as shown in Figure 6, hooked into an aperture 54 formed at the end of an anchor member 56. This anchor member, as will be better apparent from Figures 6 and 7, preferably comprises an elongated metallic body which is of arcuate cross section to closely conform to the adjacent portion of the flexible cable 32, and the anchor member is provided with a laterally extending boss 58, which is apertured as at 60 to slidably receive the flexible member 32 therethrough. This boss 58 is disposed adjacent the aperture 54 at one. end of the anchor member, while the other end of the same is provided with a second laterally disposed boss 62 having a cable receiving passage 64 therethrough, together with a clamping screw 65 by means of which the cable may be clamped against the wall of the bore 64 of the boss to thereby adjustably secure andlock the anchor to the cable intermediate the ends of the latter.

The arrangement is such that when disposed in the manner shown in Figure 1, the anchor. member may be so adjusted with respect to the intermediate portion of the cable to which the same is attached that the spring 52 will be pretensioned to any desired extent.

As will now be apparent, movement of the governor arm l4 towards the right as viewed in Figures 1 and 2, will move the cable towards the right thereby rotating the butterfly valve and the actuating wheel 42 of the same in a counterclockwise direction, this movement causing the end of the cable at 40 to move away from the engagement of the anchor member upon the intermediate portion of cable and thereby further tensioning the spring 52. The spring opposite may be so pretensioned as to assist in urging the throttle valve towards its closed position when the force supplied to the governor arm 14 is relaxed.

This spring tensioning member further functions to permit the actuating wheel 42 to be rotated in a counter-clockwise direction by the above mentioned manual control 46, so that the throttle valve may be manually opened to increase the flow of fuel to the intake manifold of the internal combustion engine despite the setting of the governor as for emergency use. During this operation, of the manual control of, the throttle valve, it will be apparent that the flexible cable 32 Will not interfere with the same, but that the flexible member 52 will further yield and permit the desired manual operation of the valve.

From the foregoing, the construction and operation of the device will be readily understood and further explanation is believed to be unnecessary. However, since numerous .modifications and changes will readily occur to those skilled in the art after a consideration of the foregoing specification and accompanying drawings, it is not desired to limit the invention to the exact construction shown and described, but all suitable modifications and equivalents may be re-' sorted to, falling within the scope of the ap pended claims.

Having described the invention, what is claimed as new is:

1. A flexible governor control assembly for use with a governor actuating member and a controlled shaft comprising an actuator wheel secured to said controlled shaft, a flexible memher entrained about said wheel and having one end secured to said actuating member, means adjustably fixedly securing the portion of said flexible member entrained about said wheel thereto, resilient means operatively connected to said wheel and yieldably tensioning said flexible member, said resilient means comprising a tension spring having one end connected to said wheel, an anchor comprising a body having an aperture for engagement by the other end of said spring means for adjustably mounting said anchor for tensioning said spring, said adjusting means connecting said anchor to said flexible member for applying tensioning movement to both ends of said spring upon tensioning movement of said flexible member.

2. A flexible governor control assembly for use with a governor actuating member, and a controlled shaft comprising an actuator wheel secured to said controlled shaft, a flexible member secured to said governor actuating member at one end and entrained over and secured to said actuator wheel for rotating the same in one direction, means resiliently urging said actuator Wheel to cause rotation in an opposite direction, said resilient means being secured at one end to said one end of said flexible member.

3. The governor control assembly of claim 2 wherein an anchor secures the other end of said resilient means to said flexible member intermediate the ends of the latter.

4. The governor control assembly of claim 2 wherein an anchor secures the other end of said resilient means to said flexible member intermediate the ends of the latter, means for adjustably securing said anchor to said flexible member.

5. A flexible governor control assembly for use with a governor actuating member, and a controlled shaft comprising an actuator wheel secured to said controlled shaft, 3. flexible member secured to said governor actuating member at one end and entrained over said actuator wheel for rotating the same in one direction, means resiliently urging said actuator wheel to cause rotation in an opposite direction, said resilient means being secured at one end to said one end of said flexible member, means carried by said actuator wheel for 'adjustably fixedly securing said flexible member to said actuator wheel.

MARTIN F. PEITZ.

References Cited in the file of this patent UNITED STATES PATENTS Number Name Date 1,216,793 Fynn Feb. 20, 1917 FOREIGN PATENTS Number Country Date 351,942 France May 16, 1905 

